/*
 * Copyright (c) 2020 - present, Inspur Genersoft Co., Ltd.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/*
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.inspur.edp.cef.generator.coreGenerator.base.serializer.changeser.entity.deserializer;

import com.inspur.edp.caf.generator.baseInfo.ParameterInfo;
import com.inspur.edp.caf.generator.baseInfo.TypeInfo;
import com.inspur.edp.caf.generator.method.ClassMethodGenerator;
import com.inspur.edp.cef.generator.coreGenerator.base.serializer.dataser.serializer.EntityDataSerGenContext;
import com.inspur.edp.cef.spi.jsonser.abstractcefchange.AbstractCefDataDeSerializer;
import org.eclipse.jdt.core.dom.Block;
import org.eclipse.jdt.core.dom.ClassInstanceCreation;
import org.eclipse.jdt.core.dom.Modifier;
import org.eclipse.jdt.core.dom.ReturnStatement;

import java.util.ArrayList;

//  protected AbstractCefDataDeSerializer getCefDataDeSerializer() {
//    return xx;
//  }
public class GetDataConvertorGenerator extends ClassMethodGenerator {
    private static final String Name = "getCefDataDeSerializer";
    private final EntityDataSerGenContext dataSerContext;
    private final Boolean isRoot;
    private final String nodeCode;

    public GetDataConvertorGenerator(EntityDataSerGenContext dataSerContext, Boolean isRoot, String nodeCode) {
        this.dataSerContext = dataSerContext;
        this.isRoot = isRoot;
        this.nodeCode = nodeCode;
    }

    @Override
    protected ArrayList<Modifier.ModifierKeyword> getAccessModifiers() {
        ArrayList<Modifier.ModifierKeyword> list = new ArrayList<>();
        list.add(Modifier.ModifierKeyword.PROTECTED_KEYWORD);
        return list;
    }

    @Override
    protected boolean getIsOverride() {
        return true;
    }

    @Override
    protected ArrayList<ParameterInfo> getParameterCollection() {
        return new ArrayList<>();
    }


    @Override
    protected String getMethodName() {
        return Name;
    }

    @Override
    protected TypeInfo getReturnType() {
        return new TypeInfo(AbstractCefDataDeSerializer.class.getTypeName());
    }

    @Override
    protected Block buildMethodBody() {
//		EntityDataSerGenContext dataSerContext = (EntityDataSerGenContext)ndcSerGenContext.getEDSerGenContext().getMgrContext().getDataSerContext();
        String dataConvertorType = null;
        if (dataSerContext != null) {
            if (isRoot) {
                dataConvertorType = dataSerContext.getDeserMainObjType().getClassName();
            } else {
                //基类方法中已添加字表序列化到上下文，但是be
                if (dataSerContext.getDeserChildTypes().containsKey(nodeCode))
                    dataConvertorType = dataSerContext.getDeserChildTypes().get(nodeCode).getClassName();
            }
        }
        if (dataConvertorType == null || dataConvertorType.isEmpty()) {
            return getNullReturnBlock();
        }
        return getNotNulLReturnBlock(dataConvertorType);
    }

    private Block getNotNulLReturnBlock(String dataConvertorType) {
        Block block = ast.newBlock();
        ReturnStatement returnStatement = ast.newReturnStatement();
        ClassInstanceCreation classInstanceCreation = ast.newClassInstanceCreation();
        classInstanceCreation.setType(ast.newSimpleType(ast.newName(dataConvertorType)));
        returnStatement.setExpression(classInstanceCreation);
        block.statements().add(returnStatement);
        return block;
    }

    private Block getNullReturnBlock() {
        Block block = ast.newBlock();
        ReturnStatement returnStatement = ast.newReturnStatement();
        returnStatement.setExpression(ast.newNullLiteral());
        block.statements().add(returnStatement);
        return block;
    }
}
